Type-writing machine



N0. 152L742. Patented Mar. 2|, I899.- G. C. BLICKENSDERFER.

TYPE WRITING MACHINE.

(Application filed. Oct. 13, 1897.) (No Model.) l0 Sheats-Sheet l.

Ill/Ml E Witmoaaeo No. s2|,742.

Witvwau Pdtented Mar.f2l,ll'899. G. c. BLICKENSDERFER. TYPE WRITINGMACHINE.

(Application flled Oct. 13, 1897.)

l0 Sheets-Sheet 2.

m: Npams PETERS co. FNOTOLITHO wAsmNuTuN. n. c

N0. 62I,742. Patented Mar. 2|, I899.

G. C. BLICKENSDERFER.

TYPE WRITING MACHINE.

'(Application filed Oct. 13, 1897.) (No Model.) In sheets-sheet 3.

witneazu I Q No. 621,742. Patented Mar. 2|, I899.

I s. c. BLICKENSDEBFER.

TYPE WRITING MACHINE.

(Afiplication filed Oct. 13, 1897.)

I0 Sheets-Sheet 4.

(No Model.)

""HIIMHHJWI Wil -1H IIIlI llll! nullllllllllh mum No. 62!,742. Patent edMar. 2|, I899.

' G. C. BLICKENSDERFER.

TYPE WRITINGMACHINE,

(Application filed Oct. 18, 1591.

I0 Sheets-Sheet 5.

(No Mmlel.)

lllmml' v I,

Witmeoam E Norms PETERS coy. PHOTQLITH Patented Mar. 2 I899.

G. C. BLICKENSDEBFE'R. TYP-E WRITING MACHINE.

(Application filed Oct. 13, 1897.)

I0 Shanty-Sheet 6.

(No Model.)

Ill

WWW

Patented Mar. 2|, I899.

G. C. BLICKENSDEBFER. TY PE WRITING MACHINE.

(Application filed Oct. 13, 1897.)

I0 Sheets-Shae! 7.

IT JJ. i K I LO (No Model.)

No. 62!,742. Patented Mar. 2|, I899. 6. 0. BLICKENSDEBFER.

TYPE wnmma MACHINE.

7 (Application filed Oct. 18, 1897.) (No Model.) l0 Sheets-Sheet B.

N0. 62l,742. Patented Mar. 2|, I899.

G. C. BLICKENSDERFER. TYPE WRITING MACHINE.

(Application filed Oct. 125Y 1897.) (No Model.) H] Sheets8heet 9.

m: uunms PETERS co. Pncwuffmu WASHINGTON uv cv Patented Mar 2|, I899. G.C. BLIGKENSDERFER.

TYPE WRI TING MACHINE.

(Ai pplicntion filed Oct 13, (No Model.)

mu 5 min] mum NITED STATES FATENT CFFrc' TE.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 621,742, dated March21, 1899.

Application filed October 1 3, 1 8 9 7.

To ctZZ' whom, it may concern:

Be it known that I, GEORGE C. BLIOKENS- DERFER, a citizenof the UnitedStates, residing at Stamford, in the county of Fairfield and State ofConnecticut, have invented certain new and useful Improvements in Type-Writing Machines; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to certain new and useful improvements intype-writing machines of that class in which the type and othercharacters are displayed upon a revoluble wheel which is caused torevolve and when necessary to move longitudinally upon its axis throughthe medium of levers, the free ends of whichconstitute the keyboard.

A good illustration of the character or type of type-writing machines towhich my invention appertains is illustrated and described in LettersPatent No. 583,840, granted to me on the 1st day of June, 1897.

My present invention-has for its objects, first, to provide aconstruction which will dispense with the ratchet-wheel on the typewheelshaft and the pawl on the comb, as shown in my patent above referred to,by which the wheel is stopped and held in position after the type orother character has been brought into position for printing, there beinga slight tendency with such construction to blurring, as the pawl on therear comb steadies the wheel just at the time it strikes the paper, andin lieu thereof to provide a gear for drawing the frontpawl into theheartshaped ratchet on the wheel-shaft and so construct said ratchetthat both the front and rear pawls shall be so located as to secureabsolute steadiness in the wheel after it has been rotated to anydesired point; second, to so construct and arrange the automatic spacerthat an extra space may be made when the last letter of a word and thespacer-bar are simultaneously depressed; third, to so arrange thealarm-bell that it maybe readily adjusted to give the alarm at anydesired point in the travel of the paper-carriage and also to positivelystop the latter if the operator fails to heed the admonition given bythe bell; fourth, to provide a pointer which Serial lilo. 655,050. (NomodeL) arrested whenever an occasion arises when such action isdesirable, and, seventh, to provide improved construction'in some of thedetails, such as the means for releasing the feed at the same time thepaper-carriage is rotated, means for temporarily suspending the actionof the feed after its power has been stored up, and in novel means forsecuring the index scale-bar in a removable position, all as will behereinafter more fully described and claimed. With these objects in Viewmy invention consists in the details of construction and arrangementhereinafter more fully described.

In order that those skilled in the art to which my invention appertainsmay know how to make and use the same, I will proceed to describe theconstruction, arrangement, and operation of the same, referring byletters and figures to the accompanying drawings, in which- Figure 1 isa perspective View, Fig. 2 is a plan view, and Fig. 3 is a side view,looking from the right-hand side of the machine. Fig. 4 is a section onthe line 4 4 of Fig. 2,

showing the double-spacing mechanism in full lines. Fig. 5 is a detailside elevation, with parts broken away, from the left-hand side of themachine. Fig. 6 is a plan view with parts omitted to show more clearlythe paper-guide, the stop-lever, and the pointer.

Figs. 7, 8, 9, and 10 are detail views showing the paper-guide, lever,and stop above referred to. Fig. 11 is a plan view of the spacingmechanism, the operating parts of the type-writer being omitted. Fig. 12is a similar view showing the mechanism as having made a single space, adouble-space movement being shown in dotted lines. a plan View showingthe pawls out of engagement. Figs. 14, 15, and 16 are detail perspectiveviews of the pawls. Fig. 17 is a side elevation of the double-spacingmechanism,-

Fig. 13 is pawls as having made a double space.

showing the parts as having made a single space. Fig. 18 is a similarView showing the Fig. 19 is a detail front view of the same. Figs. 20,21, 22, and 23 are perspective views of the parts of the spacingmechanism. Fig. 24 is a detail perspective view of the support for theshaft of the type-wheel, ratchet-wheel, and pawl. Fig. 25 is a detailperspective view of the pawl. Fig. 26 is a detail view showing thepawl-and-ratchet movement and pins which operate the pointer andstop-bar. Fig. 27 is a plan view of the ratchet-wheel. Fig. 28 is adetail perspective view of the operating-levers which give rotary motionto the type-wheel. Fig. 29 is a perspective view of what I denominatethe selecting-finger. Fig. 30 is a detail perspective View showing theadjustable bell mechanism. Fig. 31 is a detail end view of thepaper-carriage, showin g means for rotating the paper-carriage and atthe same time releasing the feed. Fig. 2 is a detail end view of themachine, showing a feed-arrestinglever secured in place on the frame ofthe machine and within easy reach of the operator. Fig. 33 is a partialend view showing a stop-rod and its connections, by means of which thereturn movement of the papercarriage is controlled to secure any desiredmargin to the printed matter; and Fig. 3st is a partial rear view of thesame, showing in addition the shoulder or stop on the machine againstwhich the end of the adjustable stop-rod abuts.

Similar letters and numerals of reference indicate like parts in theseveral figures of the drawings.

The mechanism by and through which the type-wheel is rotated to bringany given character into proper position and to impel it against thepaper is substantially the same as that shown and described in myLetters Patent hcreinbefore referred to and need not be herespecifically described, but simply designated by letters and figures tomake clear the general construction and operation.

A are the sectors secured to the bails which are depressed by thekey-levers and operate the mechanism by which the type wheel or cylinder13 is rotated on its axis to bring any desired character in properposition to be impressed upon the sheet on the paper-carriage C, all asfully described in Letters Patent No. 583,840, granted to me June 1,1897. The sectors A are vibrated upon their axes by the depression ofthe key-levers upon the swinging bails, as described in the LettersPatent referred to, for the purpose of rotating the type-wheel toproperly present the letter or other character for printing, and then tovibrate the wheel to produce the impression; but in lieu of theratchet-wheel on the typewheel shaft and the rigid stop-pawl on the rearcomb, as shown in the patent referred to, for rigidly securing thetype-wheel against any advance or retrograde movement during the act ofimpressing the letter or character upon the paper on the carriage I giveto the sectors A, which operate the type-wheel, and the sector D, whichmeshes with the teeth a on the short arm of the pawl E, which in turnarrests and holds the heart-shaped ratchet F, a different radius, thesector D having a longer radius than the sector A, which induces to thepawl E being first moved downwardly sufficiently far to contact with theteeth on the heart-shaped ratchet F to arrest its rotary movement at theproper time to present the desired letter or character on the type-wheelin position for impression upon the paper and then and in advance of thevibration of the type-wheel shaft to move into a slot or notch belowthearresting-tooth of the ratchet F to firmly lock the latter againstrotary movement in either direction which locking action is supplementedby the ratchet- Wheel F in its downward or vibratory movement seatingitself over a vibratory springpawl 19, pivoted in ears extendingdownwardly from the sector-shaft G.

The peculiar construction of the teeth and locking-notches of theratchet-wheel F is most clearly illustrated at Figs. 26 and 27, and thedifferentiality-in the pitch-line of the gears of the sectors A and thesector D and the corresponding gears on the segmental racks H, whichvibrate the type-wheel shaft, and the gear or teeth a on thelocking-pawl E is best shown in Fig. 5 by solid and dotted lines, andalso at Fig. 28, where it will be seen that the sector D extendsslightly above the plane of action of the sectorsA and that teeth orgears a on the pawl on the short arm of pawl E are slightly above thegears or teeth by which the segmental racks H are operated through themedium of the sectors A, and as a result of this arrangement when eitherof the sectors A is vibrated by the initial depression of any key-leverthe first effect is to rotate the type-wheel in the manner described inmy patent herein referred to, and the further depression of thekey-lever then causes the type-wheel shaft to vibrate and bring thedesired letter or character on the type-wheel in contact with the paperon the carriage and at the same time causes the sectorD to vibrate uponits axis, so that one of the sectors A and the sector D are bothvibrating at the same time upon a common axis, and owing to thedifferentialityin the pitch-line of the respective gears hereinbeforeexplained the pawl E is first vibrated sufliciently far to contact witha tooth on the ratchet-wheel F and then to descend rapidly (or withaccelerated speed) into the square seat 0 in said ratchet-wheel andbefore the latter has been vibrated sufficiently far to impress theletter or character upon the paper. As the type-wheel progresses invibratory movement after the pawl E has been securely located and beforethe impression is made on the paper the ratchet-wheel contacts with thevibrating spring-pawl I), which seats itself in one of the square seats0 diametrically opposite to the seat of the pawl E, and hence thetype-wheel is Securely lockedin posit-ion to secure proper and accurateimpression of the desired letter or charto its normal position by aspiral spring 6.

By this construction I am enabled to entirely dispense with thesecondary ratchet-wheel on the type-wheel shaft and the stationarylocking-pawl on the rear comb, as shown in my Letters Patenthereinbefore referred to.

I will now'proceed to describe the means by which I am enabled to securea double feed and space after the terminal letter of any given word andbefore the impression of the initial letter of the next word, and indescribing the mechanism by which this result is attained especialreference is made to Figs. 4, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21,22, and 23.

J is areciprocatin g feed-plate,suoh as shown and describedin my LettersPatent referred to.

Rising from said plate is a vertical post K with a curved knee at therear and extending upwardly and toward the keyboard, as shown at Figs.17 and 18, and to which is pivoted by a screw L a rocking bell-cranklever M of the form shown particularly at Fig. 20, the lower end ofwhich is formed with a rightangled projection or finger N, adaptedto-contact with the lower end of a bell-crank lever O, pivoted at 'P tothe spacing-bar lever Q. (See Fig. 17.) The upper end of this lever Orests upon the top edge of a vertically-adj ustable plate R, pivotallysecured at f to the front face of the front comb-plate S and held inadjustment by a set-screw g, from which construction it will be seen.that as the spacing-bar lever Q is depressed the bell-crank lever O,pivoted thereto, must of necessity rock upon its pivot P, and as theupper end of said lever is in contact with the adjustable plate R thelower end of the lever swings toward the front of the machine and,bearing against the projection or finger N at the lower end of the leverM, pulls the latter toward the operator, because the upper end of thislever M rests upon and is supported by a pin or stud T, projecting froma downwardly-extended arm of the type-wheel mechanism, (see Figs. 19 and24,) and consequently the arm K and feed-plate J, to which it issecured,

are also drawn forward sufficiently far to produce a feed equal to onespace. This action is accomplished through the medium of the feed pawlor dog T,pivoted at- U to a bell-crank lever V, pivoted at W to thebedplate X of the machine. This lever V is formed with a hook h, whichembraces a diagonal wicket i, secured to the rear end of the feed-plateJ, and consequently as the feedplate is reciprocated toward the operatorthe lever V is vibrated upon its pivot W and the toe j forces the dog Tout of contact with the' rack Y'of the paper-carriage and backward adistance equal to the feed to be made, as shown in dotted lines at Fig.12, the spiral spring b holding the dog in contact with the rack, and asthe feed-tension spring Z (see Fig. 11) returns the feed-plate J to itsnormal position the wicket 2' returns the bellcrank lever V, and thusadvances the papercarriage rack a predetermined distance, and the latteris arrested and held firmly by reason of the inclined edge of the dog Twedging against an inclined stop A, secured to the bed-plate X, and anyaccidental retro-' grade movement of the carriage-rack is prevented by aspring-dog bar B. Y

Having described how a regular feed is accomplished by the spacing-bar Owith its lever Q, I will now explain how the feed is accomplished by thedepression of the individual key-levers D.

The key-levers vibrate the bails E F, (see Fig. 28,) which aresubstantially like those described in my Letters Patent hereinbeforereferred to, the sectors A being secured to the bail F and the sector D'to the bail E. The

sector D hassecured to it a plate G, which extends laterally andconstitutes a bridge over the rear edges of the sectors A, and throughthe medium of set-screws and jamnuts (shown at H, Fig. 28) the sectors AA and D are adjusted in proper relation to each other. As the sectorsare vibrated by the action of the front bail E and the type-wheel isforced down to impress a letter upon the paper the pin or stud T on thetype-wheel mechanism vibrates against the rear edge of the upper arm ofthe bell-crank lever M, and as the finger or projection N on its lowerend is in contact with the lower end of the bell crank lever 0 it isheld against vibration and is caused to move bodily toward the operatorand being pivotally secured at L to the rigid post K, secured to thefeed-plate, the latter is caused to move toward the operator a distancesufficient to release the feed-dog T and move it longitudinally adistance sufficient to produce the proper feed, which is accomplishedthrough the medium of the bell-crank lever V and its connection with thedog T and wicket i on feed-plate J, as already described with referenceto the feed-space, and as the feed-plate J is reciprocated by the bodilymovement of the post K, the latter is in both cases acted upon by thepivoted bellcrank lever M, and-after the post K has been moved by thelever M through the action of the key-lever, the finger or projection Non lever M being still in contact with the lower end of the'bell-cranklever O, the depression of the spacing-bar O and its lever Q will causethe lower end of lever O to travel toward the operator a distancecommensurate with one feeddistance, so that by striking the final letterof any word and .the spacingbar simultaneously the feed-dog is moved inthe carriage-rack when the letter is intpressedon the paper, and whenthe tensionspring forces the feed-plate J rearward after pressure isremoved from the key and spacing-bar the ,wicket 2 causes the lever V tovibrate on its pivot and to push the feed-dogT in the direction of thefeed, or, in other words, when a key-lever is depressed the lower arm ofthe lever M is held rigidly by the contact with the lower end of leverO, and the stud T on the type-wheel mechanism, bearing against the upperarm of lever M, moves the same and its connections bodily, and when thespacing-bar lever is depressed the contact of the levers O and M at thebottom and the contact of the rear edge of the upper arm of lever M withthe stud T causes the lever M and feed-plate to also move bodily, sothat while the actions of the key-levers and the spacing-bar lever areindependent of each other for single feeding the changed position of thestud T by the key-feedenables the spacing-bar lever to begin its actionat a different point when the final letter of a word and the space-barare struck at the same time, thus resulting in a very material saving oftime in printing.

I will now proceed to describe the construction and arrangement of thealarm mechanism, referring more particularly to Figs. 3, 4, 5, 6, 7, S,and 30 of the drawings; 7

In my Letters Patent herein referred to the bell is arranged in a fixedposition on the paper-carriage and is struck always at the same time andlocality by a tappet. In my present improved construction I securethrough the radial arms extending from the paper-carriage at each end asquare or multifaced rod J, upon which is arranged a sliding yoke K, tothe advance or front end of which is-pivoted an arm L, carrying at itsouter end the bell M, and its inner end having a stop to contact withthe under face of the rod J, so that the bell may be held in operativeposition or turned upwardly, as shown in dotted lines, when the machineis to be placed in its cover. (See Fig. 30.) The tappet N, which strikesthe bell, is secured to the vibrating ink-roller frame 0 by aspring-wire P, and

as the type-wheel B contacts with the inkingroller Q the tappet isthrown against the bell when it reaches a pointin alinement with saidtappet, and as the yoke K is adjustable on the rod J it is obvious thatit can be arranged to give the alarm at the end of a line of any desiredlength. Not only can the alarm be given at any desired locality with theusual allowance of two or three additional type impressions, but Iprovide mechanism by which when the proper limit of impressions has beenmade the type-cylinder and its mechanism become positively locked, sothat even though the operator fails to heed the alarm-signal his workwill not be mutilated. This looking mechanism consists of a secondarysliding spring-yoke R, shorter than the yoke K and arranged on theopposite side of the rod J and between the ends of the yoke K, with aspiral spring S at one end, as shown. The upper edge of this secondaryyoke is formed with an inclined lip and shoulder T, adapted to contactwith the outer edge of a thin flat bar U, (see Fig. 8,) pivoted to theflat metal paper holder or guide V. This bar U is formed at the rear endwith a latch-shoulder 1, adapted to interlock with the rod or arm W,extending radially from a collar secured adjustably to the type-wheelmechanism, as clearly shown at Fig. 26. The radial arm W has connectedtherewith one end of a coil tension-springX', (see Fig. 3,) which hasits other endattached to the lower end of a bellcrank Y, pivoted betweenlugs m, projecting from the cast-metal head Z. The upper end of thebell-crank Y is formed with an inclined face, against which the lowerend of an adjusting-screw 1 contacts, and whereby the spring X may haveits tension controlled in an obvious manner for controlling the returnof the type-wheel mechanism to its normal position after everyimpression made by it upon the paper on the carriage. On each return ofthe type-cylinder the radial arm V travels to a position in rear of theshoulder Z of the latch bar, and when the shoulder T l on the secondarybell-yoke R contacts with the outer edge of the flat latch-bar U itcauses said bar to vibrate upon its pivot n, and in doing so theshoulder Z travels behind the radial arm W on the yoke-frame andintersects the path of movement of said radial bar, so that the latteris arrested by the said shoulder Z, and consequently the completevibration of the yokeframe (which is necessary to produce an impressionupon the paper) is arrested or locked before the type-cylinder reachesthe paper, and hence no impression can be made. The short spiral springS between the ends of the bell-yokes K and R yields slightly as the feedof the carriage takes place and then re-v acts with greater celeritythan the movement of the paper-carriage and causes a prompt action ofthe pivoted latch-bar U. If for any reason it should be desirable toprint a limited number of letters after the type-wheel has been lockedagainst descent, the latchbar can be released by lifting'the outer endo-sufticiently to permit the inclined lip or shoulder T on the secondarybell-yoke R to pass under the said bar when the latter, under the actionof a small spiral spring extending from the heel p of the latch-bar to 4the point g on the paper-holder V, will return to its normal position.On the return movement of the paper-carriage the incline of the lip Trides under the bar U freely. Arranged in any suitable manner betweenthe yoke K and its supporting-bar J is a fiat spring r, which producessutficient friction between the yoke and rod to maintain them in anyadjusted relation.

I will now proceed to describe the automatic pointer, which indicatesthe locality on the sheet of paper at which each successive IOC TIC

letter will be impressed and which is employed particularly incorrecting misprints or filling in omitted letters. In describing itsconstruction and operation reference is especially made to Figs. 2, 6,9, 10, and 26.

The pointer is indicated by the numeral 2 and is of the form shown atFig. 9, with its rear or ,exposed portion curved and its extreme end cutoff on a straight line to constitute an exact indicator. It is pivotedat 3 to an adjustable sheet-metal support 4, Fig. 10, whichis attachedto the rear edge of one of the lateral branches of the cast-metal head Zby set-screws 5 5, passing through slots 6 6. The support isconstructed, as shown at Fig. 10, with a flat support to constitute thepivotal connection 3 with the pointer and with a curved portion 7,turned down vertically and formed with a step or shoulder 8 to arrestand hold the pointer 2 in proper position to indicate the locality of aletter when the typewheel rises to its normal position. This positionand relation of parts may be secured with absolute accuracy through themedium of the set-screws 5 5 and slots 6 6 in the support 4:. A suitablecoil-spring 9, having one end secured at 10 to the pointer and theopposite end at 11 to the support, will return the pointer to positionagainst the stop 8. When the type-wheel descends to impress any desiredcharacter upon the paper, the pointer is moved out of the way by aradial pin 12, which projects vertically from'a collar 13, secured adjustably to the shaft G of the typewheel mechanism. (See Fig. 26.) As theradial pin 12 vibrates with the rock of the shaft G it comes in contactwith the inclined edge 15 of the pointer 2 and vibrates the same uponits pivot 3 in an obvious manner toward the left of the machine andentirely out of the way of the type-wheel, and when the latter is liftedby its tension mechanism the pin 12, reversing its movement, leaves thespring 9 free to return the pointer to its proper indicating position.

Referring now particularly to Fig. 31, I will describe my improvedmechanism, by means of which I am enabled to rotate the paper-roll.

of the carriage and at the same time release the feed, so that thepaper-carriage is capable of any adjustment longitudinally androtatively which may be desired. I have omitted this feature ofconstruction in all other figures, of the drawings simply to avoidconfusion oflines.

On the shaft of the paper-carriage and at. the right-hand end arearranged the thumbs piece A and ratchet mechanism substantially such asshown and described in my Letters Patent herein referred to and by meansof which the paper-roll is rotated. In addition to this mechanism Iarrange upon the shaft of the paper-roll a diametric vibratory arm Bwith a thumb-piece C and with a toe D adapted to contact'with the usualthumbpiece A The lower or opposite end of the arm B is connected by anordinary screw through a slot E to a link F the rear end of which isslotted and receives the feed-releasing bail G, which is the same in allrespects as that shown in my Letters Patent referred to. As the link Fis slotted at both ends, it will be seen that the feed-releasingoperator and pressure applied the thumbpiece (3 will travel toward thethumb-piece A until the toe D contacts with the thumbpiece A and thenboth thumb-pieces A C will travel together rearward, which action willcause the pawl-and-ratchet mechanism to rotate the paper-roll (shown indotted lines at Fig. 31) and at the same time draw the link F toward theoperator, and as the rear end of said link surrounds the feed-releasingbail G it will also travel in the same direction and release the feed,so that the paperca'rriage may be returned toward the righthand side ofthe machine.

I will now refer to another feature of my invention in connection withthe feed mechanism. It being understood that my feedpower is alwayscreated and stored up by the act of depressing the keys or spacer-bar,it follows that when either the key or spacerbar is released the storedpower will immediately exert itself to propel or feed the papercarriage.It frequently happens that after a letter has been printed orineifectually attempted it. is. desirable to have the paper- 'carriageremain stationary for a reprint or correction, and to accomplish thisresult I pivotally attach to the left-hand side of the frame a retainingbar or lever 1 (see Fig. 32,) with a horizontal finger-piece or key J 2at the front end and with its lower extreme end slightly beveled andadapted to contact with the edge of the feed-rack Y of thepaper-carriage or with any other suitably-presented portion of thefeed-rack, so that when the key J 2 is depressed a sufficient frictionalcontact is effected to suspend the actionv of the feed mechanism, and assoon as the pressure is relieved from the key J 2 the feed takes placein the usual manner.

Another detail of improvement is shown in Figs. 2, 38, and 34, in whichK represents the usual longitudinally-adjustable rod adapted to contactwith any suitable shoulder or stop K on the bed-plate of the machine,and thus secure any desired margin upon the printed sheet. Myimprovement in relation to this stop-rod consists in securin g itwithinasleeve or bearing on the outer end of a swinging arm K and arm L arelifted upwardly and the inher free end of the rod is pushed over astationary pin or support 0 on the feed-rack above the top plane oftheshoulder or stop K on the bed-plate, thus holding the rod K in aposition above the stop K so that as the paper-carriage and feed-racktravel to the right the rod L will not contact with the shoulder K andwhen the feed-rack and paper-carriage are in position on the machine therod K is withdrawn from the support and properly adjusted with referenceto any desired margin and is held by gravity in such position, the loweredge of the arm L contacting with the upper surface of the feedbar Y.

Referring now to Figs. 1 and 2, I will describe details of improvementin the scale index-bar and its connections. metal arms or supportshaving their lower ends returned to embrace the bell bar or red J, overthe ends of which the said supports are slipped and held by frictionalcontact. The upper portions of the arms I are curved and terminate invertical flat faces, as shown particularly at Fig. 1, and are providedwith button-studs adapted to interlock with buttonhole-slots S in theends of the scale indexbar T From this construction it will be seen thatthe arms P may be sufficient-ly sprung toward each other to permit theindex scale bar to be readily released from the studs R and that thearms may also be readily removed from the ends of the bell-bar J inorder that the latter may be removed, when desired, from its hearings orwhen it may be necessary or desirable to remove the adjustablebell-supporting yoke thereon. Recurring again to the pawls E and b,which are employed to securely lock the type-wheel against rotation, Icall attention to the fact that I provide an adjustable set-screw Uwhich arrests the return of the pawl E, and a longer set-screw V whichholds the pawl b away from the type-wheel ratchet F and against thetension of the spring cl, so that both of the pawls maybe caused to actat the proper time to secure the best results.

It will be observed that the spacing-bar is continuous and surrounds theentire keyboard. This gives a pleasing design to the entire machine andalso presents the spacingbar in such position that it can be depressedat the same time that any one of the keys in the keyboard is struck,when it is desired to accomplish the double spacing.

Having described the construction and operation of ,my improvements,what I claim as new, and desire to secure by Letters Patent,

advanced in position to stop the rotation of the type-wheel and thenadvanced with accelerated speed into its seat 0 in the ratchetwheelbefore the type-wheel is impressed against the paper upon the carriage,substantially as hereinbefore set forth.

2. The combination with the feed-bar J, feed-rack Y of papencarriage,bell-crank lever V, dogs B, T, the post K secured to the feed-bar,bellcrank lever O pivoted to the space-bar lever, and plate R on frontcomb of the machine, the spacing-bar and key-levers and vibrating stud Tattached to the vibrating type-wheel mechanism, whereby a single feedmay be secured by the depression of either the spacing-bar lever or anyone of the key-levers, or a double feed secured by the simultaneousdepression of any one ofthe key-levers and the spacing-bar lever, ashereinbefore set forth.

3. In combination, with the spacing-bar lever and the key-levers,feed-rack on the paper-carriage and a feed-dog interlocking with thefeed-rack and adapted to reciprocate,

mechanism intermediate of said dog and the spacing-bar and thekey-levers for reciprocating the feed-dog distances as described tosecure a single or double space feed, as and for the purposehereinbefore set forth.

4. In combination with the feed-plateJ provided with the wicket tandtension-spring Z, the feed-rack Y and feed-dog T, the bell-crank leverVpivoted to the bed-plate and feeddog, and with spring connection 70, andconnected with the wicket 11 by the hook h, substantially as and for thepurpose set forth.

5. In combination with the paper-carriage of a type-writer, and meansfor vibrating a bell-sounder each time a letter or other character isprinted, a bell adjustably secured to the paper-carriage whereby analarm may be sounded at the termination of any predetermined point inthe travel of the paper-carriage, substantially as hereinbefore setforth.

6. In combination with the paper-carriage, a multifaced bar J, a slidingbell-yoke K, a bell M, and bell-arm L pivotal] y attachedto the yoke andprovided with a step or notch to contact with the bell-bar J,substantially as and for the purpose set forth.

7. In combination with the type-wheel vibrating mechanism, the radialarm W" on the rocking shaft 14 and the hell on the papercarriage, avibratory spring latch-bar U, adapted to interlock with the radial arm Wand means substantially as described for operatin g the latch-barwhereby the type-wheel is locked against vibration, substantially ashereinbefore set forth.

8. In combination with the latch U, bell bar J, and yoke K on thebell-bar, the secondary yoke R with lip or shoulder T and thecoil-spring S between the end of yoke R and the end of yoke K, wherebyaccelerated movement is given to the yoke B after the shoulder Tcontacts with latch-bar substan tially as and for the purpose set forth.

9. In combination with the paper-carriage,

and a printing mechanism provided with a radial vibrating stud or arm12, a pointer 2 provided with an inclined or carn face 15 and pivoted toan adjustable plate 4 having a stop or shoulder 8 thereon, whereby thepointer is swung out of the Way of the type-wheel and returns to itsnormal position, substantially the feed released simultaneously ashereinbefore set forth.

11. In'combination, with the frame of the machine, and thepaper-carriage and feed mechanism, the pivoted retaining-bar I havingits rear end beveled and adapted to contact with thepaper-carriage,whereby the feed of the paper-carriage may be suspended,as I and for the purpose set forth.

12. Incombination With the paper-carriage provided with support 0 andthe frame of the machine, the stop-bar K connected vvith a vibrating armL pivoted to lugs N on the feed-rack plate, substantially as and. forthe purpose set forth.

In testimony whereof I affix my signature in presence of two Witnesses.

GEO. O. BLICKENSDERFER.

Witnesses:

CHAS. S. I-IINE, HERVEY SMITH.

